Question 24

If ‘$$+$$’ means ‘$$\times$$’, ‘$$-$$’ means ‘$$+$$’, ‘$$\times$$’ means ‘$$\div$$’ and ‘$$\div$$’means ‘$$-$$‘, then find the value of the following equation:-

$$21 \div 8 +2 - 12 \times 3 = ?$$

Solution

$$21 \div 8 +2 - 12 \times 3 = x $$

Lets input the sign ‘$$+$$’ with ‘$$\times$$’, ‘$$-$$’ with ‘$$+$$’, ‘$$\times$$’ with ‘$$\div$$’ and ‘$$\div$$’ with ‘$$-$$‘ in the given question.

$$ 21 - 8 \times 2 + 12 \div 3 = x $$

$$ 21 - 16 + 4 = x $$

$$ 5 + 4 = x $$

$$ 9 = x $$

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